Change the Time Span to include Dec. 6, 2018, and set the calculation interval to 10 minutes.

Under Table Settings, change “angle format” to “decimal degrees”

Click the “Generate Ephemeris” button. Look for the line that reads “2018-Dec-06 00:50” and check the R.A. and DEC.
against your right ascension and declination. They won't match exactly, since JPL's calculation is more precise than yours, but it should be close.